BRUSSELS, BELGIUM—A green faience bust that was taken from the Egyptian Museum in Tahrir, Egypt, amidst the chaos of the 2011 Arab Spring has surfaced at an auction hall in Belgium. A French archaeologist alerted Egyptian authorities to the artifact's appearance, and the object is now slated to be returned to Tahrir. Standing just over 10 inches tall, the bust represents a prince of the 26th Dynasty (ca. 685-525 B.C.), a period that saw Egyptians unite their country under native rule after occupation by a string of foreign powers.